Coolant Manifold comprises of 'T' fittings, intra-cylinder transfer tubes and AN fittings. It is designed to accommodate inter-cylinder movement that results from both thermal expansion and engine case flex without leakage occurring and also without incurring any repetitive stresses in the components that could result in fatigue failure.

The coolant pump is a centrifugal pump used to circulate the coolant through the coolant passages and into the radiator. The coolant pump is sometimes called the water pump. The pump has a housing with coolant passages. A shaft in the middle of the pump housing is suppoted on a bearing so that it is free to rotate. When the engine is running, a belt or gear drives the shaft. The shaft drives an impeller with curved blades. As the impeller spins, a low pressure is created in the center of the impeller. The low pressure draws in collant. Centrifugal force causes the coolant to be thrown off the tip of the blades under pressure. The pump circulates the coolant through the cooling system. Coolant is pumped from the bottom tank of the radiator. It goes into the engine, the cylinder, and the cylinder head. After circulating around the coolant passages, coolant enters the radiator upper tank.

Coolant testing is vital to maintain the coolant at the specific levels for optimum machining performance, tool life and coolant life. This testing is required to determine the additive concentration and glycol level of the coolant. This will make sure that adequate liner pitting and freeze point protection are achieved. This testing is also required to determine if the coolant must be replaced due to contamination.